From b2998a1f7b64f93ffd9ae90f85ca0581015d589a Mon Sep 17 00:00:00 2001
From: bezvershenko <lbezvershenkoo@yandex.ru>
Date: Tue, 12 Mar 2019 21:54:03 +0400
Subject: Add 'pull-to-refresh' in ListView and ArticleView Add host's constant
 for backend ip-address

---
 frontend/app/screens/articles/articles2.js | 143 ++++++++++++++++-------------
 1 file changed, 81 insertions(+), 62 deletions(-)

(limited to 'frontend/app/screens/articles/articles2.js')

diff --git a/frontend/app/screens/articles/articles2.js b/frontend/app/screens/articles/articles2.js
index 0d48812..03a78da 100644
--- a/frontend/app/screens/articles/articles2.js
+++ b/frontend/app/screens/articles/articles2.js
@@ -1,84 +1,103 @@
 import React from 'react';
 import {
-  FlatList,
-  Image,
-  View,
-  TouchableOpacity,
+    FlatList,
+    Image,
+    View,
+    TouchableOpacity,
 } from 'react-native';
 import {
-  RkText,
-  RkCard, RkStyleSheet,
+    RkText,
+    RkCard, RkStyleSheet,
 } from 'react-native-ui-kitten';
 import axios from 'axios';
-import { SocialBar } from '../../components';
+import {SocialBar} from '../../components';
 import NavigationType from '../../config/navigation/propTypes';
+import {HOST} from '../../constants'
 
 
 export class Articles2 extends React.Component {
-  static propTypes = {
-    navigation: NavigationType.isRequired,
-  };
-  static navigationOptions = {
-    title: 'Problems List'.toUpperCase(),
-  };
+    static propTypes = {
+        navigation: NavigationType.isRequired,
+    };
+    static navigationOptions = {
+        title: 'Problems List'.toUpperCase(),
+    };
 
-  state = {
-    articles: [],
-  };
+    state = {
+        articles: [],
+        refreshing: false,
+    };
 
-  componentDidMount() {
-    axios.get('http://192.168.1.43:8000/api/articles')
-      .then(res => {
+    componentDidMount() {
+        this.makeRemoteRequest()
+    };
+
+    makeRemoteRequest = () => {
+        axios.get(`${HOST}/api/articles`)
+            .then(res => {
+                this.setState({
+                    articles: res.data,
+                    refreshing: false,
+                });
+
+            });
+    };
+
+    handleRefresh = () =>{
         this.setState({
-          articles: res.data,
-        });
+            refreshing: true,
+        }, () => {
+            setTimeout(()=>{this.makeRemoteRequest()}, 500)
 
-      });
-  }
+        })
+    };
 
-  extractItemKey = (item) => `${item.id}`;
+    extractItemKey = (item) => `${item.id}`;
 
-  onItemPressed = (item) => {
-    this.props.navigation.navigate('Article', { id: item.id });
-  };
+    onItemPressed = (item) => {
+        this.props.navigation.navigate('Article', {id: item.id});
+    };
 
-  renderItem = ({ item }) => (
-    <TouchableOpacity
-      delayPressIn={70}
-      activeOpacity={0.8}
-      onPress={() => this.onItemPressed(item)}>
-      <RkCard rkType='imgBlock' style={styles.card}>
-        <Image rkCardImg source={{ uri: `${item.image.toString().replace('http://127.0.0.1:8000/', '')}` }} />
-        <View rkCardImgOverlay rkCardContent style={styles.overlay}>
-          <RkText rkType='header4 inverseColor'>{item.title}</RkText>
-        </View>
-        <View rkCardFooter>
-          <SocialBar rkType='space' showLabel likes={item.rating} comments={item.n_comments} is_solved={item.is_solved ? 'Solved' : "Doesn't solved"} />
-        </View>
-      </RkCard>
-    </TouchableOpacity>
-  );
+    renderItem = ({item}) => (
+        <TouchableOpacity
+            delayPressIn={70}
+            activeOpacity={0.8}
+            onPress={() => this.onItemPressed(item)}>
+            <RkCard rkType='imgBlock' style={styles.card}>
+                <Image rkCardImg source={{uri: `${item.image.toString().replace('http://127.0.0.1:8000/', '')}`}}/>
+                <View rkCardImgOverlay rkCardContent style={styles.overlay}>
+                    <RkText rkType='header4 inverseColor'>{item.title}</RkText>
+                </View>
+                <View rkCardFooter>
+                    <SocialBar rkType='space' showLabel likes={item.rating} comments={item.n_comments}
+                               is_solved={item.is_solved ? 'Solved' : "Doesn't solved"}/>
+                </View>
+            </RkCard>
+        </TouchableOpacity>
+    );
 
-  render = () => (
-    <FlatList
-      data={this.state.articles}
-      renderItem={this.renderItem}
-      keyExtractor={this.extractItemKey}
-      style={styles.container}
-    />
-  );
+    render = () => (
+        <FlatList
+            data={this.state.articles}
+            renderItem={this.renderItem}
+            keyExtractor={this.extractItemKey}
+            style={styles.container}
+            refreshing={this.state.refreshing}
+            onRefresh={this.handleRefresh}
+        />
+    );
 }
 
 const styles = RkStyleSheet.create(theme => ({
-  container: {
-    backgroundColor: theme.colors.screen.scroll,
-    paddingVertical: 8,
-    paddingHorizontal: 14,
-  },
-  card: {
-    marginVertical: 8,
-  },
-  time: {
-    marginTop: 5,
-  },
+    container: {
+        backgroundColor: theme.colors.screen.scroll,
+        paddingVertical: 8,
+        paddingHorizontal: 14,
+    },
+    card: {
+        marginVertical: 8,
+    },
+    time: {
+        marginTop: 5,
+    },
 }));
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